A modular conveyor belt cleaning device

Abstract

The utility model discloses a combined conveying belt cleaning device relates to conveying belt cleaning technical field, can solve the low technical problem of cleaning efficiency of current cleaning device to conveying belt surface. Combined conveying belt cleaning device includes water spraying unit, scraping unit, water suction unit and material collecting unit, water spraying unit includes the booster pump and belt washing spray pole of pipeline connection, and scraping unit includes the scraper, and the scraper sets up at the rear of belt washing spray pole, to scrape the water spot on the lower side belt surface after being washed by belt washing spray pole, water suction unit includes the water suction roller, and the water suction roller sets up at the rear of scraper, to adsorb the residual water spot on the lower side belt surface after being scraped by scraper, material collecting unit includes the first hopper and first discharge gate, to make the residual material and water spot cleaned off fall into the first hopper and export through the first discharge gate. The utility model can realize the efficient cleaning to the conveying belt, improve production efficiency and equipment service life, reduce equipment maintenance cost and environmental pollution.

Description

Technical Field

[0001] This utility model relates to the field of conveyor belt cleaning technology, and in particular to a combined conveyor belt cleaning device. Background Technology

[0002] During the operation of belt conveyors, a large amount of material, water stains, and dust often remain at the discharge end of the conveyor belt. If these residues are not cleaned in time, they will not only waste materials and increase production costs, but also cause wear and tear on the conveyor belt itself, shortening its service life and affecting the stability and reliability of the entire conveying system. In addition, the residual dust will also pollute the working environment and harm the health of operators.

[0003] Currently, although there are some cleaning devices and methods for cleaning the unloading end of belt conveyors, they generally have the following shortcomings: Poor cleaning effect: Most existing cleaning devices use a single cleaning method, such as simply scraping off materials with a scraper or rinsing with water. This is insufficient for thoroughly cleaning highly adhesive residues. Especially when the conveyor belt surface is covered with sticky materials, simple rinsing or scraping is ineffective in removing them, resulting in incomplete cleaning. The residual materials will then re-enter the material conveying process as the conveyor belt continues to operate, affecting material quality.

[0004] Lack of residual water treatment: During the cleaning process, rinsing the conveyor belt with water leaves a large amount of water stains on the surface. If these water stains are not treated in time, they will enter subsequent production stages with the conveyor belt, potentially causing problems such as material dampness and clumping, affecting normal production. Moreover, residual water stains will accelerate the corrosion and aging of the conveyor belt, reducing its service life.

[0005] Inconvenient material collection: Existing cleaning equipment does not effectively collect and treat residual materials and water stains left after cleaning, which easily scatter around the equipment, causing a dirty and messy working environment, thereby increasing the cleaning workload and labor intensity. At the same time, the scattered materials may also enter the mechanical parts of the equipment, affecting the normal operation of the equipment, or even causing equipment failure. Utility Model Content

[0006] To address one or more technical problems in the prior art, this utility model provides a combined conveyor belt cleaning device, comprising a water spraying unit, a scraping unit, and a water suction unit positioned directly below the unloading end of the belt conveyor. The water spraying unit includes a booster pump and a belt washing spray bar connected by pipelines. The angle between the water spraying direction of the belt washing spray bar and the travel direction of the lower belt surface of the belt conveyor is an obtuse angle, so that the water flow pressurized by the booster pump can be sprayed out from the belt washing spray bar and form an impact on the residual material on the lower belt surface in the opposite direction to the travel direction of the residual material, thereby removing it from the belt surface. The scraping unit includes a scraper, which is disposed behind the washing belt spray bar to scrape off water stains on the lower belt surface after being rinsed by the washing belt spray bar. The water absorption unit includes a water absorption roller, which is disposed behind the scraper to absorb residual water stains on the lower belt surface after being scraped off by the scraper. The combined conveyor belt cleaning device also includes a material collection unit; The material collection unit includes a first hopper with a first discharge port. The first hopper surrounds the washing belt spray bar, the scraper, and the water suction roller so that the cleaned residual material and water stains fall into the first hopper and are discharged through the first discharge port.

[0007] Preferably, the scraping unit further includes an adjustment mechanism; The adjustment mechanism is used to adjust the degree of contact between the scraper and the lower side surface.

[0008] Preferably, the water spray unit further includes a washing tank spray bar connected to the booster pump pipeline; The washing tank spray bar is installed inside the first tank hopper so that water pressurized by the booster pump can be sprayed out from the washing tank spray bar to rinse the inner wall of the first tank hopper.

[0009] Preferably, the water spray unit further includes an overflow valve; The overflow valve is located downstream of the booster pump to limit the maximum water pressure in the pipeline downstream of the overflow valve, and the wash belt spray bar and / or the wash tank spray bar are located downstream of the overflow valve.

[0010] Preferably, the water absorption unit further includes a roller, a bearing, a compression spring, and a spring support; The water-absorbing roller is sleeved on the roller shaft, and both ends of the roller shaft pass through the bearings. The bearings are connected to the spring support through the compression spring, so that the water-absorbing roller is kept in close contact with the lower belt surface under the action of the compression spring. The water-absorbing roller is driven to rotate by the movement of the lower belt surface.

[0011] Preferably, the combined conveyor belt cleaning device further includes a dewatering unit, which includes a first extrusion plate, a second extrusion plate, a first drive rod, a second drive rod, and a double-outlet cylinder; The first extrusion plate and the second extrusion plate are disposed opposite to each other on the outer periphery of the water absorption roller, so that the closing of the first extrusion plate and the second extrusion plate can apply pressure to the water absorption roller to squeeze out water; The outer wall of the first extrusion plate is connected to the top of the first drive rod, the outer wall of the second extrusion plate is connected to the top of the second drive rod, the middle part of the first drive rod is hinged to the middle part of the second drive rod, the bottom of the first drive rod is hinged to the first telescopic rod of the double-extension rod cylinder, and the bottom of the second drive rod is hinged to the second telescopic rod of the double-extension rod cylinder, so that the double-extension rod cylinder can control the opening and closing of the first extrusion plate and the second extrusion plate by extending and retracting the first telescopic rod and the second telescopic rod.

[0012] Preferably, the material collection unit further includes a second hopper and a discharge pipe; The second hopper is provided with a first feed inlet, a second feed inlet, and a second discharge outlet. The first feed inlet is located in front of and below the unloading end of the belt conveyor. The second feed inlet is located below the first feed inlet. The first discharge outlet is connected to the second feed inlet through the discharge pipe. The second discharge outlet is located below the second feed inlet. A receiving device is provided below the second discharge outlet.

[0013] Preferably, the material collection unit further includes a discharge slope; The discharge ramp connects the top of the first hopper to the first feed inlet, so that the material and moisture impacted by the washing belt spray bar can be discharged into the second hopper through the discharge ramp.

[0014] Preferably, the material collection unit surrounds the unloading end of the belt conveyor, and the material collection unit further includes an air blowing port and an air exhaust port; The air outlet is located above the unloading end of the belt conveyor. An air blowing device is provided upstream of the air outlet. The angle between the air blowing direction of the air outlet and the traveling direction of the upper belt surface of the belt conveyor is an acute angle, so that the airflow blown out from the air outlet can blow away the dust on the upper belt surface and discharge it into the second hopper. The exhaust vent is located between the first feed inlet and the second discharge outlet, and an exhaust device is provided downstream of the exhaust vent so that the dust in the second hopper can be discharged through the exhaust vent.

[0015] Preferably, the air blowing port is connected to the air outlet of the dust removal equipment, the air blowing device includes the air outlet fan of the dust removal equipment, the air exhaust port is connected to the air inlet of the dust removal equipment, and the air exhaust device includes the air inlet fan of the dust removal equipment.

[0016] More preferably, a first relay fan is provided between the air outlet and the pipe connecting the air blower and the air outlet, and a second relay fan is provided between the exhaust port and the air inlet.

[0017] The beneficial effects of this utility model are: This invention sprays pressurized water from a booster pump onto a belt washing spray bar, with the spray direction at an obtuse angle to the travel direction of the belt surface on the lower side of the belt conveyor, creating a reverse impact on the material and effectively peeling off residual material adhering to the conveyor belt.

[0018] This utility model device integrates a water spraying unit, a scraping unit, and a water suction unit, sequentially performing a three-stage cleaning process on the conveyor belt: high-pressure water rinsing, scraping off residual materials and water stains with a scraper, and adsorbing residual water stains with a water suction roller. This multi-stage cleaning method ensures thorough cleaning of the conveyor belt and reduces material residue and water stain problems. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] Figure 1 This is a schematic diagram of a combined conveyor belt cleaning device according to an embodiment of the present utility model. Figure 1 ; Figure 2 yes Figure 1 A schematic diagram of the AA direction; Figure 3 This is a schematic diagram of a combined conveyor belt cleaning device according to an embodiment of the present utility model. Figure 2 ; Figure 4 This is a schematic diagram of the scraping unit according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the operation of the dehydration unit according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the structure of the dehydration unit according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of a combined conveyor belt cleaning device according to an embodiment of the present utility model. Figure 3 ; Figure 8 This is a schematic diagram of a combined conveyor belt cleaning device according to an embodiment of the present utility model. Figure 4 ; Figure 9 This is a schematic diagram of a combined conveyor belt cleaning device according to an embodiment of the present utility model. Figure 5 ; Figure 10This is a schematic diagram of a combined conveyor belt cleaning device according to an embodiment of the present utility model. Figure 6 .

[0021] In the picture: 1. Belt conveyor; 11. Lower belt surface; 12. Upper belt surface; 2. Water spray unit; 21. Booster pump; 22. Washing belt spray bar; 23. Washing tank spray bar; 24. Overflow valve; 3. Scraping unit; 31. Scraper; 32. Adjustment mechanism; 4. Water suction unit; 41. Water suction roller; 42. Roller shaft; 43. Bearing; 44. Compression spring; 45. Spring support; 5. Collection unit; 51. First hopper; 511. First discharge port; 52. Second hopper; 521. First feed inlet; 522. Second feed inlet; 523. Second discharge port; 53. Discharge pipe; 54. Discharge slope; 55. Air vent; 56. Exhaust vent; 6. Dehydration unit; 61. First extrusion plate; 62. Second extrusion plate; 63. First drive rod; 64. Second drive rod; 65. Double-rod hydraulic cylinder; 651. First telescopic rod; 652. Second telescopic rod; 7. Receiving equipment; 8. Dust removal equipment; 81. Air outlet; 82. Exhaust fan; 83. Air inlet; 84. Inlet fan; 85. First relay fan; 86. Second relay fan; 87. Dust collection box. Detailed Implementation

[0022] The present invention will now be described in detail with reference to embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0023] It should be noted that, in order to clearly show the structural relationship of the key internal components of this utility model, some pipes, lines, fixing brackets and other components of the actual product are omitted in the drawings. However, the specific design schemes of these omitted components are all easily implemented by those skilled in the art based on the technical solutions currently provided by this utility model and conventional design.

[0024] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0025] Example 1: like Figures 1-10 As shown, a combined conveyor belt cleaning device includes a water spraying unit 2, a scraping unit 3, and a water suction unit 4, which are located directly below the unloading end of the belt conveyor 1. The water spraying unit 2 includes a booster pump 21 connected by pipelines and a belt washing spray bar 22. The angle between the water spraying direction of the belt washing spray bar 22 and the travel direction of the lower belt surface 11 of the belt conveyor 1 is an obtuse angle, so that the water flow pressurized by the booster pump 21 can be sprayed out from the belt washing spray bar 22 and form an impact on the residual material on the lower belt surface 11 in the opposite direction to the travel direction of the residual material, thereby removing it from the belt surface. The scraping unit 3 includes a scraper 31, which is located behind the washing belt spray bar 22 to scrape off water stains on the lower belt surface 11 after being rinsed by the washing belt spray bar 22. The water absorption unit 4 includes a water absorption roller 41, which is located behind the scraper 31 to absorb residual water stains on the lower belt surface 11 after being scraped off by the scraper 31. The combined conveyor belt cleaning device also includes a material collection unit 5; The material collection unit 5 includes a first hopper 51, which has a first discharge port 511. The first hopper 51 surrounds the washing belt spray bar 22, scraper 31 and water suction roller 41 so that the residual material and water stains that have been cleaned fall into the first hopper 51 and are discharged through the first discharge port 511.

[0026] In specific implementation, the booster pump 21 in the water spray unit 2 can be selected as a pump capable of providing high-pressure water of at least 20 MPa, and the nozzle of the belt washing spray bar 22 can be a fan-shaped nozzle, which facilitates the spraying of high-pressure water onto the conveyor belt surface. When the pressure of the high-pressure water jet exceeds the adhesion force between the material and the conveyor belt surface, the material peels off from the belt surface. The high-speed water flow can also pre-clean the material adhering to the far end of the conveyor belt by carrying away the mineral powder particles washed down. The principle is that the impact force and entrainment effect of the high-speed water flow can pre-wet and loosen the material adhering to the far end, making it easier for subsequent cleaning. The scraper 31 of the scraping unit 3 is set behind the belt washing spray bar 22. Its function is to scrape away the very small amount of residual material after washing after the material is detached or loosened by the water spraying of the belt washing spray bar 22, and to play the main role of water removal. The water suction roller 41 of the water suction unit 4 only plays the role of water removal.

[0027] Depending on the specifications of the belt conveyor 1, the number of scrapers 31 and suction rollers 41 can be set to one, two, or more, and the scrapers 31 and suction rollers 41 can be connected to the lifting mechanism to achieve automatic or manual lifting control. During automatic lifting, an automatic control system such as a PLC can be used to detect the conveyor belt slippage switch or receive a central control signal system to determine the operation and stop of the conveyor belt, thereby controlling the lifting; the water spray unit 2 can also achieve automatic start and stop based on this.

[0028] Traditional scraper cleaners suffer from rapid abrasive wear and material buildup; water washing devices alone result in high moisture content on the conveyor belt and environmental pollution from dripping during return; and roller brush cleaners are ineffective at removing high-viscosity mineral powder, prone to dust generation and clogging. This invention addresses these issues by using high-pressure water jets to first peel off the material, reducing wear caused by direct contact between the scraper 31 and the material. The scraping unit 3 and the water suction unit 4 work together to effectively remove material and water stains, solving the problems of moisture residue and dripping. The entire process is highly effective at cleaning high-viscosity mineral powder while reducing dust generation and clogging. It is particularly suitable for the return section of conveyor belts carrying viscous mineral powder in bulk cargo ports, efficiently solving the problems of viscous material residue and moisture removal, reducing secondary pollution on the return belt surface and material accumulation in the working area.

[0029] This invention improves upon the traditional method of using low-pressure water to wet the sticky material and then removing it with a scraper. By using a high-pressure water jet to impact the belt surface, most of the sticky material can be peeled off. The subsequent scraper 31 primarily removes water and can also scrape off a very small amount of residual material after rinsing. The suction roller 41 only removes water and does not participate in removing surface sticky material. Therefore, the scraper 31 and suction roller 41 of this invention have a longer service life.

[0030] Example 2: Furthermore, the scraping unit 3 also includes an adjustment mechanism 32; The adjustment mechanism 32 is used to adjust the degree of contact between the scraper 31 and the lower belt surface 11.

[0031] In practical implementation, the adjusting mechanism 32 can adopt various structures, such as a lifting mechanism including a telescopic rod such as a cylinder / hydraulic cylinder, which adjusts the height by extending and retracting the telescopic rod; another example is a screw lifting mechanism, which uses the rotation of the screw to drive the support end of the scraper 31 to move up and down, thereby achieving adjustment; yet another example is a gear lifting mechanism, which uses a motor to drive gears to move on a gear rail, thereby driving the connecting parts to rise and fall. These structures can all achieve precise adjustment of the relative positions of the scraping unit 3 and the water absorption unit 4 with the conveyor belt to adapt to the cleaning needs under different working conditions.

[0032] Example 3: Furthermore, the water spray unit 2 also includes a washing tank spray bar 23 connected to the booster pump 21 pipeline; The washing tank spray bar 23 is installed inside the first tank 51 so that the water pressurized by the booster pump 21 can be sprayed out from the washing tank spray bar 23 to rinse the inner wall of the first tank 51.

[0033] In practice, the washing tank spray bar 23 can be positioned near the inner wall of the first tank hopper 51, with its nozzle facing the inner wall of the first tank hopper 51. Both the washing belt spray bar 22 and the washing tank spray bar 23 can use fan-shaped nozzles. Depending on the specific structure of the inner wall of the first tank hopper 51, the washing tank spray bar 23 can also use conical nozzles, flat nozzles, etc.

[0034] The water spray unit 2 can be set with different rinsing pressures according to the adhesion force between different mineral powders and the conveyor belt, achieving energy saving and consumption reduction. For example, in the control system of the water spray unit 2, a database of pressure parameters corresponding to different types of mineral powders can be preset. When the operator inputs the type of mineral powder being conveyed, the control system can retrieve the corresponding pressure parameters from the database and adjust the output pressure of the booster pump 21. After running for a period of time, to prevent material from sticking to the inner wall of the first hopper 51, the washing spray bar 23 can be manually or periodically activated to achieve self-cleaning of the first hopper 51.

[0035] Example 4: Furthermore, the water spray unit 2 also includes an overflow valve 24; The overflow valve 24 is located downstream of the booster pump 21 to limit the maximum water pressure in the pipeline downstream of the overflow valve 24. The wash belt spray bar 22 and / or the wash tank spray bar 23 are located downstream of the overflow valve 24.

[0036] In practical implementation, the water spray unit 2 can provide high-pressure water for cleaning the conveyor belt via the booster pump 21. The booster pump 21 can be a multi-stage centrifugal pump, which works by using the high-speed rotation of the impeller to give the water inside the pump centrifugal force, thereby increasing the water pressure. The water spray unit 2 can achieve stepless PID regulation of water pressure by connecting to an automatic control system such as a PLC or DCS and setting up components such as pressure sensors, electronic valves, and automatic controllers. The PID controller can adjust the speed of the booster pump 21 motor according to the deviation between the set pressure value and the actual detected water pressure value, thereby precisely controlling the water pressure.

[0037] An overflow valve 24 is installed in the high-pressure water circuit of the spray unit 2, and its inlet is connected to the outlet of the booster pump 21. When the water pressure exceeds the set value, such as 20 MPa, the overflow valve 24 opens to achieve overpressure protection.

[0038] Example 5: Furthermore, the water absorption unit 4 also includes a roller 42, a bearing 43, a compression spring 44, and a spring support 45; The water-absorbing roller 41 is sleeved on the roller shaft 42, and both ends of the roller shaft 42 are inserted into the bearing 43. The bearing 43 is connected to the spring support 45 through the compression spring 44, so that the water-absorbing roller 41 is kept in close contact with the lower belt surface 11 under the action of the compression spring 44. The water-absorbing roller 41 is driven to rotate by the movement of the lower belt surface 11.

[0039] In practical implementation, the compression spring 44 ensures a non-rigid contact between the absorbent roller 41 and the conveyor belt, allowing for pre-tensioning of the contact between the absorbent roller 41 and the conveyor belt surface. The friction of the conveyor belt surface drives the absorbent roller 41 to rotate without power. The absorbent roller 41 is preferably a sponge absorbent roller 41 with a glue-coated surface on the intermediate roller shaft 42. The absorbent material can be porous materials such as PVA, PVC, PP, and PU. Furthermore, the absorbent roller 41 can be connected to a mechanism similar to the adjustment mechanism 32 of the scraping unit 3, capable of adjusting the degree of contact between the absorbent roller 41 and the lower belt surface 11. Even further, the humidity of the belt surface can be monitored using existing humidity detection equipment, and the degree of contact between the absorbent roller 41 and the lower belt surface 11 can be adjusted in real time based on this monitoring.

[0040] Example 6: Furthermore, the combined conveyor belt cleaning device also includes a dewatering unit 6, which includes a first extrusion plate 61, a second extrusion plate 62, a first drive rod 63, a second drive rod 64, and a double-outlet cylinder 65. The first extrusion plate 61 and the second extrusion plate 62 are disposed opposite to each other on the outer periphery of the water absorption roller 41, so that the closing of the first extrusion plate 61 and the second extrusion plate 62 can apply pressure to the water absorption roller 41 to squeeze out water. The outer wall of the first extrusion plate 61 is connected to the top of the first drive rod 63, the outer wall of the second extrusion plate 62 is connected to the top of the second drive rod 64, the middle part of the first drive rod 63 is hinged to the middle part of the second drive rod 64, the bottom of the first drive rod 63 is hinged to the first telescopic rod 651 of the double-rod cylinder 65, and the bottom of the second drive rod 64 is hinged to the second telescopic rod 652 of the double-rod cylinder 65, so that the double-rod cylinder 65 can control the opening and closing of the first extrusion plate 61 and the second extrusion plate 62 by extending and retracting the first telescopic rod 651 and the second telescopic rod 652.

[0041] In specific implementation, for a combination of a first extrusion plate 61 and a second extrusion plate 62, the number of the first drive rod 63, the second drive rod 64, and the double-rod hydraulic cylinder 65 can be multiple (e.g., Figure 6 As shown in the figure, the balanced extrusion effect is achieved through the synergistic action of multiple components.

[0042] After high-pressure washing, the conveyor belt is scraped by scraper 31, which removes most of the water stains from the belt surface. The conveyor belt, after the scraper 31 removes the water, is then subjected to contact adsorption by the suction roller 41 to remove any remaining residual water stains. After the suction roller 41 has been running for a period of time and is full of water, the extension rods of the double-outlet cylinder 65 can be manually or automatically controlled (timed, or in real-time based on the humidity monitoring results of the conveyor belt) to retract and squeeze the suction roller 41, thus achieving dehydration and regeneration of the suction roller 41. Specifically, when the control system receives a manual command or a timed signal, or detects that the humidity of the conveyor belt exceeds a set threshold, it controls the double-outlet cylinder 65 to act. The first extension rod 651 and the second extension rod 652 simultaneously retract, causing the first extrusion plate 61 and the second extrusion plate 62 to move towards the center, squeezing the suction roller 41 and squeezing out the water.

[0043] Example 7: Furthermore, the material collection unit 5 also includes a second hopper 52 and a discharge pipe 53; The second hopper 52 is provided with a first feed inlet 521, a second feed inlet 522, and a second discharge outlet 523. The first feed inlet 521 is located below the unloading end of the belt conveyor 1. The second feed inlet 522 is located below the first feed inlet 521. The first discharge outlet 511 is connected to the second feed inlet 522 through the discharge pipe 53. The second discharge outlet 523 is located below the second feed inlet 522. A receiving device 7 is provided below the second discharge outlet 523.

[0044] In practice, receiving equipment 7 can be a transport vehicle, conveyor belt, silo, storage box, or other equipment used to receive the cleaned materials. Taking a transport vehicle as an example, when the conveyor belt transports the material to the unloading end, the material falls into the transport vehicle's compartment. After the transport vehicle is full, it drives away, transporting the material to a designated location for processing. If it is a conveyor belt, the material can continue to be transported to the next process. Silos and storage boxes can receive materials by having their inlets.

[0045] Example 8: Furthermore, the material collection unit 5 also includes a discharge slope 54; The discharge ramp 54 connects the top of the first hopper 51 with the first feed inlet 521, so that the material and water impacted by the washing belt spray bar 22 can be discharged into the second hopper 52 through the discharge ramp 54.

[0046] In practice, the discharge slope 54 is set below the unloading end, so that the material that automatically falls off from the lower side of the belt surface 11, as well as some of the material and water impacted by the washing belt spray bar 22, can flow smoothly into the second hopper 52 through the discharge slope 54. This can share the bearing pressure of the first hopper 51 and the first discharge port 511, ensure smooth material flow, and avoid accumulation.

[0047] Example 9: Furthermore, the material collection unit 5 surrounds the unloading end of the belt conveyor 1, and the material collection unit 5 also includes an air blowing port 55 and an air exhaust port 56; The air outlet 55 is located above the unloading end of the belt conveyor 1. An air blowing device is provided upstream of the air outlet 55. The angle between the air blowing direction of the air outlet 55 and the travel direction of the upper belt surface 12 of the belt conveyor 1 is an acute angle, so that the airflow blown out from the air outlet 55 can blow away the dust on the upper belt surface 12 and discharge it into the second hopper 52. The exhaust port 56 is located between the first feed port 521 and the second discharge port 523. An exhaust device is provided downstream of the exhaust port 56 so that the dust in the second hopper 52 can be discharged through the exhaust port 56.

[0048] In practice, the advantage of the material collection unit 5 surrounding the unloading end of the belt conveyor 1 is that it can form a relatively closed environment. In this environment, the blowing and exhaust ventilation work together to form an effective dust removal path. The negative pressure of the exhaust port 56 can discharge the dust from the second hopper 52, the discharge slope 54, the discharge pipe 53, and the first hopper 51.

[0049] Preferably, the air blowing port 55 is connected to the air outlet 81 of the dust removal equipment 8, the air blowing device includes the air outlet fan 82 of the dust removal equipment 8, the exhaust port 56 is connected to the air inlet 83 of the dust removal equipment 8, and the exhaust device includes the air inlet fan 84 of the dust removal equipment 8.

[0050] In practical implementation, the dust removal equipment 8 can be selected from cyclone baghouse dust collectors, pulse jet dust collectors, etc. Taking the cyclone baghouse dust collector as an example, its working principle is that dust-laden gas enters the cyclone dust collector, and under the action of centrifugal force, most of the dust is separated. The dust can be discharged to the dust collection box 87 at regular intervals or according to the amount of dust accumulated inside the dust collector 8. A small amount of fine dust enters the baghouse dust collector with the airflow and is further collected through the filtration of the filter bags. The advantage of connecting the exhaust port 56 to the dust removal equipment 8 is that it can effectively remove the dust generated during the unloading process and avoid dust pollution to the environment. The air outlet 81 and air inlet 83 are connected to the air blower 55 and air exhaust 56 respectively. This connection method allows for more effective dust collection and discharge, reducing dust accumulation inside the equipment and fully utilizing the performance characteristics of the dust removal equipment 8. In particular, the connection between the air outlet 81 and the air blower 55 allows the air purified by the dust removal equipment 8 to directly act on the upper belt surface 12 of the belt conveyor 1, thus fully utilizing the function of the dust removal equipment 8 to achieve environmental protection and energy conservation.

[0051] More preferably, a first relay fan 85 is provided between the pipe connecting the air outlet 55 and the air outlet 81, and a second relay fan 86 is provided between the pipe connecting the exhaust outlet 56 and the air inlet 83.

[0052] In practice, the number of relay fans can be determined based on the actual working conditions' air pressure and air volume requirements to ensure that the airflow can effectively blow dust away from the conveyor belt and discharge it into the designated area. When the belt conveyor 1 is transporting minerals, the dust collection box 87 of the dust removal equipment 8 will collect a large amount of mineral powder. This design helps to effectively collect and recycle the mineral powder, avoiding the scattering and waste of mineral powder.

[0053] Example 10: The conveyor belt of belt conveyor 1 is cleaned using a combined conveyor belt cleaning device, including the following steps: S1. Start the booster pump 21 to spray water onto the lower belt surface 11 of the belt conveyor 1 using the washing spray bar 22. The direction of the water flow is at an obtuse angle to the direction of travel of the lower belt surface 11, forming a reverse impact to strip away residual materials. S2. The lower side surface 11, after being processed in step S1, moves to the scraper 31, where the scraper 31 scrapes away the residual material and water stains. S3. After being processed in step S2, the lower belt surface 11 continues to move to the water absorption roller 41. Under the action of the compression spring 44, the water absorption roller 41 is in close contact with the lower belt surface 11 and rotates to absorb residual water stains. S4. The residual materials and water stains cleaned out in steps S1 to S3 fall into the first hopper 51 and are discharged to the receiving device 7 through the first discharge port 511.

[0054] In practical implementation, this utility model addresses the difficulties in conveying viscous mineral powder materials, namely the residue and cleaning difficulties caused by the stickiness of the materials, as well as the problem of moisture removal. It first peels most of the sticky materials off the surface of the conveyor belt by high-pressure water jet, scraper 31 scrapes off most of the water stains and the remaining small part of the material, and water suction roller 41 further absorbs the residual water stains, thereby effectively solving the problems of incomplete cleaning and water dripping on the return trip of traditional equipment.

[0055] Preferably, the residual material and water stains cleaned out in steps S1 to S3 fall into the first hopper 51, and enter the second hopper 52 through the first discharge port 511 and discharge pipe 53, and are discharged to the receiving device 7 through the second discharge port 523. At the same time, the material at the unloading end of the belt conveyor 1 enters the second hopper 52 through the first feed port 521 and is discharged to the receiving device 7 through the second discharge port 523.

[0056] More preferably, during steps S1 to S4, the washing spray bar 23 is activated to wash the inner wall of the first bin 51, the water suction roller 41 is squeezed and dehydrated by the dehydration unit 6, and the blowing device and exhaust device are activated so that the airflow from the blowing port 55 blows the dust on the upper side surface 12 into the second bin 52 and is discharged through the exhaust port 56.

[0057] The technical solution of this utility model can realize multiple functions such as high-pressure reverse water flow impact, multi-stage cleaning process, effective treatment of residual water stains, convenient material collection and discharge, self-cleaning of the hopper, safety protection of the overflow valve, and environmental protection and energy saving.

[0058] In summary, this utility model can achieve efficient cleaning of conveyor belts, improve production efficiency and equipment lifespan, and reduce equipment maintenance costs and environmental pollution.

[0059] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A combined conveyor belt cleaning device, comprising a water spraying unit (2), a scraping unit (3), and a water suction unit (4) disposed directly below the unloading end of a belt conveyor (1), characterized in that: The water spraying unit (2) includes a booster pump (21) connected by a pipeline and a belt washing spray bar (22). The angle between the water spraying direction of the belt washing spray bar (22) and the travel direction of the lower belt surface (11) of the belt conveyor (1) is an obtuse angle, so that the water flow pressurized by the booster pump (21) can be sprayed out from the belt washing spray bar (22) and form an impact on the residual material on the lower belt surface (11) opposite to the travel direction of the residual material, thereby removing it from the belt surface. The scraping unit (3) includes a scraper (31) which is located behind the washing belt spray bar (22) to scrape off water stains on the lower belt surface (11) after being rinsed by the washing belt spray bar (22). The water absorption unit (4) includes a water absorption roller (41), which is located behind the scraper (31) to absorb residual water stains on the lower side surface (11) after being scraped by the scraper (31). The combined conveyor belt cleaning device also includes a material collection unit (5). The material collection unit (5) includes a first hopper (51), which has a first discharge port (511). The first hopper (51) surrounds the washing belt spray bar (22), the scraper (31) and the water suction roller (41) so that the cleaned residual material and water stains fall into the first hopper (51) and are discharged through the first discharge port (511).

2. The combined conveyor belt cleaning device according to claim 1, characterized in that: The scraping unit (3) also includes an adjustment mechanism (32); The adjustment mechanism (32) is used to adjust the degree of contact between the scraper (31) and the lower side surface (11).

3. The combined conveyor belt cleaning device according to claim 2, characterized in that: The water spray unit (2) also includes a washing tank spray bar (23) connected to the pipeline of the booster pump (21). The washing tank spray bar (23) is installed inside the first tank (51) so that the water pressurized by the booster pump (21) can be sprayed out from the washing tank spray bar (23) and rinse the inner wall of the first tank (51).

4. The combined conveyor belt cleaning device according to claim 3, characterized in that: The water spray unit (2) also includes an overflow valve (24); The overflow valve (24) is located downstream of the booster pump (21) to limit the maximum water pressure in the pipeline downstream of the overflow valve (24), and the wash belt spray bar (22) and / or the wash tank spray bar (23) are located downstream of the overflow valve (24).

5. The combined conveyor belt cleaning device according to claim 4, characterized in that: The water absorption unit (4) also includes a roller (42), a bearing (43), a compression spring (44), and a spring support (45). The water-absorbing roller (41) is sleeved on the roller shaft (42), and both ends of the roller shaft (42) are inserted into the bearing (43). The bearing (43) is connected to the spring support (45) through the compression spring (44) so ​​that the water-absorbing roller (41) is kept in close contact with the lower belt surface (11) under the action of the compression spring (44). The water-absorbing roller (41) is driven to rotate by the operation of the lower belt surface (11).

6. The combined conveyor belt cleaning device according to claim 5, characterized in that: The combined conveyor belt cleaning device also includes a dewatering unit (6), which includes a first extrusion plate (61), a second extrusion plate (62), a first drive rod (63), a second drive rod (64), and a double-outlet cylinder (65). The first extrusion plate (61) and the second extrusion plate (62) are disposed opposite to each other on the outer periphery of the water absorption roller (41) so that the closing of the first extrusion plate (61) and the second extrusion plate (62) can apply pressure to the water absorption roller (41) to squeeze and dehydrate. The outer wall of the first extrusion plate (61) is connected to the top of the first drive rod (63), the outer wall of the second extrusion plate (62) is connected to the top of the second drive rod (64), the middle part of the first drive rod (63) is hinged to the middle part of the second drive rod (64), the bottom of the first drive rod (63) is hinged to the first telescopic rod (651) of the double-rod cylinder (65), and the bottom of the second drive rod (64) is hinged to the second telescopic rod (652) of the double-rod cylinder (65), so that the double-rod cylinder (65) can control the opening and closing of the first extrusion plate (61) and the second extrusion plate (62) by extending and retracting the first telescopic rod (651) and the second telescopic rod (652).

7. The combined conveyor belt cleaning device according to claim 6, characterized in that: The material collection unit (5) also includes a second hopper (52) and a discharge pipe (53); The second hopper (52) is provided with a first feed inlet (521), a second feed inlet (522) and a second discharge outlet (523). The first feed inlet (521) is located in front of and below the unloading end of the belt conveyor (1). The second feed inlet (522) is located below the first feed inlet (521). The first discharge outlet (511) is connected to the second feed inlet (522) through the discharge pipe (53). The second discharge outlet (523) is located below the second feed inlet (522). A receiving device (7) is provided below the second discharge outlet (523).

8. The combined conveyor belt cleaning device according to claim 7, characterized in that: The material collection unit (5) also includes a discharge slope (54); The discharge ramp (54) connects the top of the first hopper (51) with the first feed inlet (521) so that the material and water impacted by the washing belt spray bar (22) can be discharged into the second hopper (52) through the discharge ramp (54).

9. The combined conveyor belt cleaning device according to claim 8, characterized in that: The material collection unit (5) surrounds the unloading end of the belt conveyor (1), and the material collection unit (5) also includes an air blowing port (55) and an air exhaust port (56). The air outlet (55) is located above the unloading end of the belt conveyor (1). An air blowing device is provided upstream of the air outlet (55). The angle between the air blowing direction of the air outlet (55) and the travel direction of the upper belt surface (12) of the belt conveyor (1) is an acute angle, so that the airflow blown out from the air outlet (55) can blow away the dust on the upper belt surface (12) and discharge it into the second hopper (52). The exhaust port (56) is located between the first feed port (521) and the second discharge port (523). An exhaust device is provided downstream of the exhaust port (56) so that the dust in the second hopper (52) can be discharged through the exhaust port (56).

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